Newly operational cars

This past weekend I was at the Illinois Railway Museum for the museum's annual Members Day operations and there was some equipment that ran for the first time at the museum and/or for the first time in many years. Milwaukee streetcar 972 operated for the first time since 1999 and the first time in revenue service since perhaps 1978. Chicago elevated gate car 24, which is nearing the end of a complete restoration which includes back-dating to its 1914 condition, operated as a motor for the first time since it suffered a motor flash-over while operating to IRM under power over the North Shore Line in 1958 (it was used as a control trailer during the 1970s though). And the first public operation of Illinois Central "Highliner" double-deck MU cars took place with cars 1630 and 1637 making a few short demonstration trips. I suspect that this is the first-ever museum operation of a double-deck electric car in this country - though only if you exclude European cars that have been imported.